Summary Prospectus by Investment Company - Form 497K

Summary Prospectus
September 28, 2024

NEOS Nasdaq-100^® High Income ETF (QQQI)

Principal U.S. Listing Exchange for the Fund: NASDAQ

Before you invest, you may want to review the Fund's prospectus and statement of additional information, which contain more information about the Fund and its risks. You can find the Fund's prospectus, statement of additional information and other information about the fund online at www.neosfunds.com. You can also get this information at no cost by calling 833-833-1311. The current prospectus and statement of additional information, dated September 28, 2024, are incorporated by reference into this summary prospectus. Information about the Fund's net asset value per share, market price, premiums and discounts and bid-ask spreads can be found at www.neosfunds.com.

The Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

Summary Information - NEOS Nasdaq 100^® High Income ETF

Investment Objective

The NEOS Nasdaq-100^® High Income ETF (the "Fund") seeks to generate high monthly income in a tax efficient manner with the potential for equity appreciation.

Fund Fees and Expenses

The table below describes the fees and expenses that you pay if you buy, sell, and hold shares of the Fund ("Shares"). Future expenses may be greater or less. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries on the purchase and sale of Fund shares, which are not reflected in the tables and examples below.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

⁽¹⁾Other Expenses are estimated for the Fund's initial fiscal year.

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% annual return and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it purchases and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may result in higher transaction costs and higher taxes when Shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses table or in the Example above, may affect the Fund's performance. For the period January 30, 2024 (commencement of operations) to May 31, 2024, the Fund's portfolio turnover rate was 3% of the average value of its portfolio.

Principal Investment Strategies of the Fund

The Fund is an actively-managed exchange-traded fund ("ETF") that seeks to achieve its investment objective by investing in a portfolio of stocks that make up the Nasdaq-100^® Index (the "Nasdaq-100^®" or the "Reference Index") and a call options strategy, that consists of written (sold) call options on the Nasdaq-100^®Index ("NDX^®call options"). The Fund seeks to generate high monthly income from the premiums earned from the NDX^® call options as well as the dividends received from the Fund's equity holdings. The Adviser may under certain circumstances enter a call spread strategy where it purchases long (bought) calls in addition to the written (sold) call options. The Adviser will seek to generate a net-credit in the call spread. The net credit is the difference between the premium received by the Fund from the sale of the call options and the cost of buying the long, out-of-the-money NDX^® call options. The goal of the NDX^® options strategy is to generate high monthly income in a tax efficient manner. The strategy also offers the potential for

upside participation when the underlying equity index appreciates. The Fund seeks tax efficient returns by utilizing index options such as NDX^® call options that qualify as "Section 1256 Contracts." If such options are held at year end, the Fund will receive favorable tax treatment on such investments. Under Internal Revenue Code rules, they will be deemed as if they were sold at fair market value on the last business day of the tax year. If the Section 1256 Contracts produce a capital gain or loss, such gain or loss on the Contracts open at the end of the year, or terminated during the year, are treated as 60% long term gains and 40% short term gains. Such favorable tax treatment is regardless of how long the Contracts were held. The Fund may seek to take advantage of tax loss harvesting opportunities on its NDX^® call options and/or equity positions. This can be accomplished by taking investment losses from certain equity and/or options positions to offset realized taxable gains of equities and/or options.

Under normal circumstances, at least 80% of the Fund's net assets, plus borrowings for investment purposes, will be invested in securities, or derivative instruments linked to securities, of companies that are included in the Reference Index. For purposes of the 80% policy, the value of such derivative instruments shall be determined on a daily mark-to-market basis.

The Nasdaq-100^® is a market capitalization weighted index comprised of the securities of 100 of the largest non-financial companies listed on The Nasdaq Stock Market LLC based on market capitalization. Such securities may include companies domiciled domestically or internationally (including in emerging markets), and may include common stocks, ordinary shares, depositary receipts representing interests in non-U.S. companies, and tracking stocks. The Fund will concentrate its investments (i.e., hold more than 25% of its total assets) in a particular industry or group of industries to approximately the same extent that the Reference Index concentrates in an industry or group of industries.

The Fund will generally invest in the Nasdaq-100^®, meaning the Fund will generally invest in all of the component securities of the Nasdaq-100^® in the same approximate proportions as in the Nasdaq-100^® (often called a "replication strategy)." However, the Fund may use a "representative sampling" strategy, meaning it may invest in a sample of the securities in the Nasdaq-100^® whose risk, return, and other characteristics closely resemble the risk, return, and other characteristics of the Nasdaq-100^®as a whole, when NEOS Investment Management, LLC, the Fund's investment adviser (the "Adviser"), believes it is in the best interests of the Fund (e.g., when replicating the Nasdaq-100^® involves practical difficulties or substantial costs, a Nasdaq-100^® constituent becomes temporarily illiquid, unavailable, or less liquid, or as a result of legal restrictions or limitations that apply to the Fund but not to the Nasdaq-100^®).

From time to time, the Adviser actively manages the written and purchased call options prior to their expiration in an attempt to capture gains and minimize losses due to the movement of the Nasdaq-100^®Index.

The Fund's options strategy typically consists of written (sold) call options on the Nasdaq-100^® on up to 100% of the value of the equity securities held by the Fund, with the goal of generating premium from such options. The Fund may use a portion of this premium to buy out-of-the-money call options on the Nasdaq-100^®, which would potentially provide upside equity participation when the Nasdaq-100^® appreciates.

The Fund expects the total value of the written call options and the total value of the purchased call options to each be up to 100% of the Fund's net assets. The Fund may use a portion of the premium received from writing call options to purchase out-of-the-money call options. Call options written by the Fund will typically have a strike price that is close to the current price of the reference asset, and if call options are purchased by the Fund they will typically have a strike price that is higher than the current price of the Reference Index asset.

The Fund may engage in active and frequent trading of portfolio securities in implementing its principal investment strategies.

The Fund is considered to be diversified. Additionally, the Fund's investment strategies may involve active and frequent trading resulting in high portfolio turnover.

The Product(s) is not sponsored, endorsed, sold or promoted by Nasdaq, Inc. or its affiliates (Nasdaq, with its affiliates, are referred to as the "Corporations"). The Corporations have not passed on the legality or suitability of, or the accuracy or adequacy of descriptions and disclosures relating to, the Product(s). The Corporations make no representation or warranty, express or implied to the owners of the Product(s) or any member of the public regarding the advisability of investing in securities generally or in the Product(s) particularly, or the ability of the Nasdaq-100 Index^® to track general stock market performance. The Corporations' only relationship to Neos Investment Management LLC ("Licensee") is in the licensing of the Nasdaq^®, Nasdaq-100 Index^®, NDX^®, Nasdaq-100^®, and certain trade names of the Corporations and the use of the Nasdaq-100 Index^® which is determined, composed and calculated by Nasdaq without regard to Licensee or the Product(s). Nasdaq has no obligation to take the needs of the Licensee or the owners of the

Product(s) into consideration in determining, composing or calculating the Nasdaq-100 Index^®. The Corporations are not responsible for and have not participated in the determination of the timing of, prices at, or quantities of the Product(s) to be issued or in the determination or calculation of the equation by which the Product(s) is to be converted into cash. The Corporations have no liability in connection with the administration, marketing or trading of the Product(s).

The Corporations do not guarantee the accuracy and/or uninterrupted calculation of Nasdaq-100 Index® or any data included therein. The Corporations make no warranty, express or implied, as to results to be obtained by Licensee, owners of the product(s), or any other person or entity from the use of the Nasdaq-100 Index® or any data included therein. The Corporations make no express or implied warranties, and expressly disclaim all warranties of merchantability or fitness for a particular purpose or use with respect to the Nasdaq-100 Index® or any data included therein. Without limiting any of the foregoing, in no event shall the Corporations have any liability for any lost profits or special, incidental, punitive, indirect, or consequential damages, even if notified of the possibility of such damages.

Principal Risks of Investing in the Fund

There is no assurance that the Fund will meet its investment objective. The value of your investment in the Fund, as well as the amount of return you receive on your investment in the Fund, may fluctuate significantly. You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments. Therefore, you should consider carefully the following risks before investing in the Fund. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or any government agency.

Sector Risk. Sector risk is the possibility that securities within the same group of industries will decline in price due to sector-specific market or economic developments. If the Fund invests more heavily in a particular sector, the value of its shares may be especially sensitive to factors and economic risks that specifically affect that sector. As a result, the Fund's share price may fluctuate more widely than the value of shares of a fund that invests in a broader range of industries.

Information Technology Sector Risk. Because the Nasdaq-100^® Index has been concentrated in the information technology sector, the Fund may be sensitive to changes in, and its performance may depend to a greater extent on, the overall condition of the information technology sector. Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on profit margins. Information technology companies may have limited product lines, markets, financial resources or personnel. The products of information technology companies may face product obsolescence due to rapid technological developments and frequent new product introduction, unpredictable changes in growth rates and competition for the services of qualified personnel. Companies in the information technology sector are heavily dependent on patent protection and the expiration of patents may adversely affect the profitability of these companies.

Covered Call Option Writing Risk. By writing covered call options, in return for the receipt of premiums, the Fund will give up the opportunity to benefit from potential increases in the value of the Nasdaq-100^® above the exercise prices of such options, but will continue to bear the risk of declines in the value of the Nasdaq-100^®. The premiums received from the options may not be sufficient to offset any losses sustained from the volatility of the underlying stocks over time. In addition, the Fund's ability to sell the securities underlying the options will be limited while the options are in effect unless the Fund cancels out the option positions through the purchase of offsetting identical options prior to the expiration of the written options. Exchanges may suspend the trading of options in volatile markets. If trading is suspended, the Fund may be unable to write options at times that may be desirable or advantageous to do so, which may increase the risk of tracking error.

Derivatives Risk. The Fund's use of derivatives may reduce the Fund's returns or increase volatility. Volatility is defined as the characteristic of a security, an index or a market to fluctuate significantly in price within a short time period. Derivatives may also be subject to counterparty risk, which is the risk that the other party in the transaction will not fulfill its contractual obligation. Counterparty risk for over-the-counter ("OTC") derivatives is generally higher than that for derivatives traded on an exchange or through a clearing house. A risk of the Fund's use of derivatives is that the fluctuations in their values may not correlate perfectly with the value of the underlying asset, the performance of the asset class to which the Fund seeks exposure or the performance of the overall markets. The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more difficult for the Fund to value accurately. The Fund could also suffer losses related to its derivatives positions as a result of unanticipated market movements, or movements between the time of periodic reallocations of Fund assets, which losses are potentially unlimited. Certain derivatives may give rise to a form of leverage and

may expose the Fund to greater risk and increase its costs. The impact of U.S. and global regulation of derivatives may make derivatives more costly, may limit the availability of derivatives, may delay or restrict the exercise by the Fund of termination rights or remedies upon a counterparty default under derivatives held by the Fund (which could result in losses), or may otherwise adversely affect the value or performance of derivatives.

Options Risk. There are risks associated with the sale and purchase of call and put options. As a seller (writer) of a put option, the Fund will tend to lose money if the value of the reference index or security falls below the strike price. As the seller (writer) of a call option, the Fund will tend to lose money if the value of the reference index or security rises above the strike price. As the buyer of a put or call option, the Fund risks losing the entire premium invested in the option if the Fund does not exercise the option.

Absence of Prior Active Market Risk. While the Fund's Shares are listed on NASDAQ (the "Exchange"), there can be no assurance that an active trading market for Shares will develop or be maintained. The Fund's distributor does not maintain a secondary market in Shares.

Active Management Risk. The Fund is actively managed, which means that investment decisions are made based on investment views. There is no guarantee that the investment views will produce the desired results or expected returns, which may cause the Fund to fail to meet its investment objective or to underperform its benchmark index or funds with similar investment objectives and strategies. Furthermore, active trading that can accompany active management may result in high portfolio turnover, which may have a negative impact on performance. Active trading may result in higher brokerage costs or mark-up charges, which are ultimately passed on to shareholders of the Fund. Active trading may also result in adverse tax consequences.

Concentration Risk. The Fund may invest in up to 100% of the constituents of the Nasdaq-100^®, which itself may have concentration in certain regions, economies, countries, markets, industries or sectors. The Fund may be susceptible to an increased risk of loss, including losses due to adverse events that affect the Fund's investments more than the market as a whole, to the extent that the Fund's investments are concentrated in the securities of a particular issuer or issuers, country, group of countries, region, market, industry, group of industries, sector or asset class.

Cybersecurity Risk. The computer systems, networks and devices used by the Funds and their service providers to carry out routine business operations employ a variety of protections designed to prevent damage or interruption from computer viruses, network failures, computer and telecommunication failures, infiltration by unauthorized persons and security breaches. Despite the various protections utilized by the Funds and their service providers, systems, networks, or devices potentially can be breached. Each Fund and its shareholders could be negatively impacted as a result of a cybersecurity breach.

Cybersecurity breaches can include unauthorized access to systems, networks, or devices; infection from computer viruses or other malicious software code; and attacks that shut down, disable, slow, or otherwise disrupt operations, business processes, or website access or functionality. Cybersecurity breaches may cause disruptions and impact each Fund's business operations, potentially resulting in financial losses; interference with each Fund's ability to calculate its NAV; impediments to trading; the inability of each Fund, the adviser, and other service providers to transact business; violations of applicable privacy and other laws; regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs; as well as the inadvertent release of confidential information.

Similar adverse consequences could result from cybersecurity breaches affecting issuers of securities in which the Funds invest; counterparties with which the Funds engage in transactions; governmental and other regulatory authorities; exchange and other financial market operators, banks, brokers, dealers, insurance companies, and other financial institutions (including financial intermediaries and service providers for a Fund's shareholders); and other parties. In addition, substantial costs may be incurred by these entities in order to prevent any cybersecurity breaches in the future.

Equity Risk. The net asset value of the Fund will fluctuate based on changes in the value of the U.S. equity securities held by the Fund. Equity prices can fall rapidly in response to developments affecting a specific company or industry, or to changing economic, political or market conditions.

Exchange Traded Funds ("ETFs") Risk. The Fund is structured as an ETF. As a result, the Fund is subject to special risks, including:

•Not Individually Redeemable. The Fund's shares ("Shares") are not redeemable by retail investors and may be redeemed only by Authorized Participants at net asset value ("NAV") and only in Creation Units. A retail investor generally incurs brokerage costs when selling shares.

•Trading Issues. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable, such as extraordinary market volatility. There can be no assurance that Shares will continue to meet the listing requirements of the Exchange which may result in the Shares being delisted. An active trading market for the Shares may not be developed or maintained. If the Shares are traded outside a collateralized settlement system, the number of financial institutions that can act as Authorized Participants that can post collateral on an agency basis is limited, which may limit the market for the Shares.

•Market Price Variance Risk. The market prices of Shares will fluctuate in response to changes in NAV and supply and demand for Shares and will include a "bid-ask spread" charged by the exchange specialists, market makers or other participants that trade the Shares. There may be times when the market price and the NAV vary significantly. This means that Shares may trade at a discount to NAV.

•In times of market stress, market makers may step away from their role market making in the Shares and in executing trades, which can lead to differences between the market value of the Shares and the Fund's NAV.

•The market price of the Shares may deviate from the Fund's NAV, particularly during times of market stress, with the result that investors may pay significantly more or significantly less for the Shares than the Fund's NAV, which is reflected in the bid and ask price for the Shares or in the closing price.

•In stressed market conditions, the market for the Shares may become less liquid in response to the deteriorating liquidity of the Fund's portfolio. This adverse effect on the liquidity of the Shares may, in turn, lead to differences between the market value of the Shares and the Fund's NAV.

•Authorized Participant Risk. Only an Authorized Participant may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as an Authorized Participant on an agency basis (i.e., on behalf of other market participants). To the extent that Authorized Participants exit the business or are unable to proceed with creation or redemption orders with respect to the Fund and no other Authorized Participant is able to step forward to create or redeem Creation Units, Fund shares may be more likely to trade at a premium or discount to net asset value and possibly face trading halts or delisting. Authorized Participant concentration risk may be heightened for securities or instruments that have lower trading volumes.

Additionally, purchases and redemptions of creation units primarily with cash rather than through in-kind delivery of portfolio securities may cause the Fund to incur certain costs, including brokerage costs or taxable gains or losses that it might not have incurred if it made a redemption in-kind, and therefore decrease the Fund's NAV to the extent not offset by a transaction fee payable by an AP.

Issuer Risk. Changes in the financial condition or credit rating of an issuer or counterparty, changes in specific economic or political conditions that affect a particular type of security or issuer, and changes in general economic or political conditions can affect a security's or instrument's value. The values of securities of smaller, less well-known issuers can be more volatile than those of larger issuers. Issuer-specific events can have a negative impact on the value of the Fund.

Large Capitalization Companies Risk. Stocks of large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better or worse than the stock market in general. These periods have in the past lasted as long as several years.

Market and Geopolitical Risk. The increasing interconnectivity between global economies and financial markets increases the likelihood that events or conditions in one region or financial market may adversely impact issuers in a different country, region or financial market. Securities in the Fund's portfolio may underperform due to inflation (or expectations for inflation), interest rates, global demand for particular products or resources, natural disasters, climate change and climate-related events, pandemics, epidemics, terrorism, regulatory events and governmental or quasi-governmental actions. The occurrence of global events similar to those in recent years may result in market volatility and may have long term effects on both the U.S. and global financial markets

Portfolio Turnover Risk. Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities, which may affect the Fund's performance.

Tax Risk. The Fund invests in derivatives. The federal income tax treatment of a derivative may not be as favorable as a direct investment in an underlying asset. Derivatives may produce taxable income and taxable realized gain. Derivatives may adversely affect the timing, character and amount of income the Fund realizes from its investments. As a result, a larger portion of the Fund's distributions may be treated as ordinary income rather than as capital gains. In addition, certain derivatives are subject to mark-to-market or straddle provisions of the Internal Revenue Code of 1986, as amended (the "Internal Revenue Code"). If such provisions are applicable, there could be an increase (or decrease) in the amount of taxable dividends paid by the Fund.

Underlying Investment Company Risk. The Fund may invest in the securities of other investment companies including ETFs. If the Fund invests in and, thus, is a shareholder of, another investment company, the Fund's shareholders will indirectly bear the Fund's proportionate share of the fees and expenses paid by such other investment company, including advisory fees, in addition to both the management fees payable directly by the Fund to the Fund's own investment adviser and the other expenses that the Fund bears directly in connection with the Fund's own operations.

Valuation Risk. The price the Fund could receive upon the sale of a security or other asset may differ from the Fund's valuation of the security or other asset and from the value used by the Reference Index, particularly for securities or other assets that trade in low volume or volatile markets or that are valued using a fair value methodology as a result of trade suspensions or for other reasons. In addition, the value of the securities or other assets in the Fund's portfolio may change on days or during time periods when shareholders will not be able to purchase or sell the Fund's shares. Authorized Participants who purchase or redeem Fund shares on days when the Fund is holding fair-valued securities may receive fewer or more shares, or lower or higher redemption proceeds, than they would have received had the Fund not fair-valued securities or used a different valuation methodology. The Fund's ability to value investments may be impacted by technological issues or errors by pricing services or other third- party service providers.

Performance

The Fund does not have performance history for a full calendar year. Once the Fund has completed a full calendar year of investment operations, performance information will be presented in this section of this Prospectus. Also, shareholder reports containing financial and performance information will be mailed to shareholders semi-annually. Updated performance information will be available at no cost by visiting the Fund's website at www.neosetfs.com.

Management

Investment Adviser

NEOS Investment Management, LLC

Portfolio Managers

Garrett Paolella, Managing Partner and Portfolio Manager of the Adviser, since January 2024.

Troy Cates, Managing Partner and Portfolio Manager of the Adviser, since January 2024.

Purchase and Sale of Fund Shares

Authorized Participants

The Fund issues and redeems Shares at NAV only in a large, specified number of Shares each called a "Creation Unit," or multiples thereof, and only with authorized participants ("Authorized Participants") which have entered into contractual arrangements with the Fund's distributor ("Distributor"). Creation Unit transactions are typically conducted in exchange for a portfolio of securities closely approximating the holdings of the Fund and/or cash.

Investors

Individual Shares of the Fund may only be purchased and sold on a national securities exchange through brokers. Shares of the Fund are listed on the Exchange and because Shares will trade at market prices rather than NAV, Shares of the Fund may trade at a price greater than or less than NAV.

Tax Information

Fund distributions are generally taxable as ordinary income, qualified dividend income, or capital gains (or a combination), unless your investment is in an individual retirement account ("IRA") or other tax-advantaged account. Distributions on investments made through tax-deferred arrangements may be taxed later upon withdrawal of assets from those accounts.

The Fund seeks tax efficient returns by utilizing index options that receive favorable tax treatment under Internal Revenue Code rules because they qualify as "Section 1256 Contracts." Under these rules, each section 1256 contract held by the Fund at year end is treated as if it were sold at fair market value on the last business day of the tax year. If the Section 1256 contracts produce capital gain or loss, gains or losses on the Section 1256 contracts open at the end of the year, or terminated during the year, are treated as 60% long term and 40% short term, regardless of how long the contracts were held. Recently proposed regulations seek to interpret what types of swap agreements are to be treated as notional principal contracts rather than as section 1256 contracts. When finalized, these regulations could result in the Fund having to treat more of its income on swap agreements and more of the distributions made to shareholders as ordinary income and less as long-term capital gains.

Payments to Broker-Dealer and Other Financial Intermediaries

If you purchase Shares through a broker-dealer or other financial intermediary, the Adviser or other related companies may pay the intermediary for the sale of Shares or related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary's website for more information.